Tens of thousands of tuna-attracting devices are drifting around the Pacific

Tropical tuna are one of the few wild animals we still hunt in large numbers, but finding them in the vast Pacific ocean can be tremendously difficult.

However, fishers have long known that tuna are attracted to, and will aggregate around, floating objects such as logs.

In the past, people used bamboo rafts to attract tuna, fishing them while they were …